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Datasheet: YD820 (No company)

1.2W AUDIO POWER AMPLIFIER

 

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No company
YOUDA INTEGRATED CIRCUIT
YD820
1.2W AUDIO POWER AMPLIFIER--YD820
DESCRIPTION
The YD820 is a monolithic integrated circuit audio amplifier. It is designed audio frequency class B amplifiers.
FEATURES
*Wide operating supply voltage: Vcc=3~12V.
*Low quiescent supply current (Icc=4mA, typical).
*Medium output power
*Po=1.2W at Vcc=9V, R
L
=8ohm, THD=10%.
*Good ripple rejection
*Minimum number of external parts required.
BLOCK DIAGRAM
4
8
6
7
1
5
3
2
Vcc
GND
_
+
ABSOLUTE MAXIMUM RATINGS
(Tamb=25)
PARAMETER SYMBOL
VALUE
UNIT
Supply Voltage
Vcc
16
V
Output Peak Current
Iop
1.5
A
Power Dissipation
P
D
1.25 W
Operating Temperature
Topr
-20~ +70
Storage Temperature
Tstg
-55~ +150

WuXi YouDa Electronics Co., Ltd
Add: No.5 Xijin Road, National Hi-Tech Industrial Development Zone, Wuxi Jiangsu China
Tel: 86-510-5205117 86-510-5205106 Fax: 86-510-5205110 Website: www.e-youda.com
SHENZHEN OFFICE Tel 86-755-83740369 Fax 86-755-83741418
Ver 5.0 1 of 4 2006-06-28
YOUDA INTEGRATED CIRCUIT
YD820
ELECTRICAL CHARACTERISTICS
(Unless otherwise specified, V
CC
=9V, R
L
=8, Rg=600, f=1kHz, Tamb=25
PARAMETER SYMBOL
TEST
CONDITIONS
MIN
TYP
MAX
UNIT
Supply Voltage
Vcc 3
12
V
Output DC Voltage
Vo
DC
4 4.5 5 V
Quiescent Circuit
Current
Iccq
4
12
mA
Vcc =12V, R
L
=8
2
Vcc =9V, R
L
=4 1.6
Vcc =9V, R
L
=8 0.9 1.2
Vcc =6V, R
L
=4 0.75
Vcc =3.5V, R
L
=4
0.25
Output Power
Po
THD
=10%
Rf =120
Vcc =3V, R
L
=4
0.20
W
Rf=33
16
Po=1.2W
Rf =120
60
Rf
=33
3.5
Input Sensitivity
Vin
Po=50mW
Rf =120
12
mV
Input
Resistance Zi
f=1kHz
5 M
C
8
=680pF 507000
Gain Bandwidth
BW
C
8
=220pF 5020000
H
Z
Po=500mW, Rf =33
0.8
Total Harmonic
Distortion
THD
Po=500mW, Rf =120
0.4
%
Open Loop Voltage
Gain
Gvo
75 dB
Rf =33
45
Closed Loop
Voltage Gain
Gv
Rf =120
34
dB
Input Noise Voltage
V
NI
BPF=20Hz20kHz
3 V
Input Noise Current
I
NI
20Hz20kHz
0.4 nA
Signal Noise Ratio
S/N
Po=1.2W, Gv
=34 dB,
BPF=20Hz20kHz
80 dB
Ripple Rejection
Ratio
RR fr=100kHz,
C
6
=47F, Rf=120 42 dB








WuXi YouDa Electronics Co., Ltd 2 of 4 Website: www.e-youda.com
YOUDA INTEGRATED CIRCUIT
YD820
APPLICATION CIRCUIT 1
4
8
6
7
1
3
2
5
Rf
10k
1
56
SPEAKER
+
100
+
47
0.22
+
470
+
100
C8
+
470
0.1
Vin
Vcc
+
_
APPLICATION CIRCUIT 2
4
8
6
7
1
3
2
5
Rf
10k
1
SPEAKER
+
100
+
47
0.22
+
470
C8
+
470
0.1
Vin
Vcc





WuXi YouDa Electronics Co., Ltd 3 of 4 Website: www.e-youda.com
YOUDA INTEGRATED CIRCUIT
YD820
OUTLINE DRAWING

















WuXi YouDa Electronics Co., Ltd 4 of 4 Website: www.e-youda.com
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